Xtreme™ Fleet Diesel Engine Oil offers significant improvements in high temperature oxidation resistance, deposit
control, and the ability to stay in grade over long operating intervals. Additionally, Xtreme Fleet Diesel Engine Oil’s synthetic components allow it to stay in grade over long periods of time while providing:

Excellent oxidation stability at high temperatures

Improved shear stability to prevent viscosity breakdown

Outstanding soot control for EGR engines

Exceptional engine cleanliness

Outstanding anti-wear, oxidation control, and friction control

Improved fuel efficiency

Xtreme Fleet Diesel Engine Oils are available in the following viscosities: 10W-30 CK-4, 15W-40 CK-4 SN.